/Engine/Source/Runtime/SlateCore/Public/Fonts/FontCache.h
Whether or not the specified character, within the specified font, can be loaded with the specified maximum font fallback level
Whether or not the character can be loaded
bool CanLoadCodepoint ( const [FFontData](API\Runtime\SlateCore\Fonts\FFontData) & InFontData, const UTF32CHAR InCodepoint, EFontFallback MaxFallbackLevel ) const